Polyester Plush, Gentle Soothing, ReusableTears disappear when you use our Boo-Bunnie comfort toy on a little one's boo-boos. Includes plush Boo Bunnie and bisphenol-free plastic boo cube pre-filled with distilled water. Store in freezer until needed. Stephan Baby Boo-Bunnies have received top awards from iParenting, the Family Review Center and Parent to Parent. Boo-Bunnies are ideal for gently soothing minor owies while comforting your little one. To wash boo bunny remove boo cube, machine wash, tumble dry low, do not bleach. Boo cubes may be washed in warm soapy water and air dried. Boo cubes should not be washed in the dishwasher.